| 地面运动强度度量参数的有效性研究 |
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| 引用本文： | 王建民,朱晞.地面运动强度度量参数的有效性研究[J].北京交通大学学报(自然科学版),2006,30(1):21-24,29. |
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| 作者姓名： | 王建民 朱晞 |
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| 作者单位： | 北京交通大学,土木建筑工程学院,北京,100044;北京交通大学,土木建筑工程学院,北京,100044 |
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| 摘 要： | 概率地震需求分析的目标是估计结构在不同地面运动强度水平下的响应,结构响应的不确定性对采用的地面运动强度度量参数有着很强的依赖.因而,需要比较所采用的地面运动强度度量参数的有效性.这里推荐了一个新的采用向量地面运动强度度量参数来估计结构需求的方法,并把这个地面运动强度度量参数应用于一些不同周期和不同强度折减系数的单自由度结构系统.统计结果表明,推荐的地面运动强度度量参数可以有效地减小估计单自由度结构系统最大变形延性需求时的离散性,而且减少了计算分析工作量.
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| 关 键 词： | 地面运动强度度量参数 基于性能抗震设计 非线性动力分析 |
| 文章编号： | 1673-0291（2006）01-0021-04 |
| 收稿时间： | 2005-07-25 |
| 修稿时间： | 2005-07-25 |
Efficiency of Alternative Ground Motion Intensity Measures |
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| WANG Jian-min,ZHU Xi.Efficiency of Alternative Ground Motion Intensity Measures[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2006,30(1):21-24,29. |
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| Authors: | WANG Jian-min ZHU Xi |
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| Institution: | Schcol of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | The aim of probability seismic demand analysis is estimation of the demand on a structure by earthquakes of different intensities.The uncertainties associated with these estimates are highly dependent on the variable adopted as intensity measure(IM).It is required to compare the efficiency of adopted IM.In this paper a new vector IM for predicting the demand of structures is proposed.The proposed IM has been tested by application to several SDOF systems with different periods and different strength reduction factors.It is shown by statistical results that the proposed IM has decreased the dispersion of the peak SDOF displacement ductility demand conditioned on IM,and reduced computational effort. |
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| Keywords: | ground motion intensity measure performance based seismic design non linear dynamic analysis |
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